tierzero.com

Valid Email Server
Domain Lookup › tierzero.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
tierzero.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-18 23:59:33 UTC · ↺ Refresh

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MX Hostnames

  • aspmx.l.google.com
  • alt1.aspmx.l.google.com
  • aspmx2.googlemail.com
  • aspmx3.googlemail.com
  • alt2.aspmx.l.google.com

MX Priorities

  • alt2.aspmx.l.google.com: 5
  • alt1.aspmx.l.google.com: 5
  • aspmx.l.google.com: 1
  • aspmx3.googlemail.com: 10
  • aspmx2.googlemail.com: 10

A / AAAA Records

  • 51.81.221.209 ↩ ns1014100.ip-51-81-221.us

Mail Server IPs

  • 172.253.116.26 ↩ dj-in-f26.1e100.net
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
  • 108.177.123.27 ↩ lcscld-in-f27.1e100.net
  • 2800:3f0:4003:c0f::1a (no PTR)
  • 142.251.163.26 ↩ wv-in-f26.1e100.net
  • 2607:f8b0:4004:c06::1b ↩ bg-in-f27.1e100.net

SOA Record

Raw SOA ns-cloud-d1.googledomains.com cloud-dns-hostmaster.google.com 2 21600 3600 259200 300
Primary NS (mname)
ns-cloud-d1.googledomains.com
Admin Email (rname)
cloud-dns-hostmaster@google.com
Serial
2
Refresh
21600s
Retry
3600s
Expire
259200s
Minimum TTL
300s

Nameservers (NS)

ns-cloud-d4.googledomains.com
ns-cloud-d1.googledomains.com
ns-cloud-d2.googledomains.com
ns-cloud-d3.googledomains.com

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:173.247.241.189 ip4:192.40.160.0/19 ip4:74.91.80.0/20 include:_spf.google.com include:_spf.sparkpostmail.com include:_spf.smtp.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✓ 1 found
google._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

7 records
  • brevo-code:e6e74ded88a57364247733c315829c61
  • google-site-verification=FiautettgdJ0p5mCSagX9sNPPAOHZxppwDlCP_obGBg
  • google-site-verification=e_U6ftePh_MXvRdZ78jOx-X7l7zkclEPwtM-el3P5ZI
  • SPFv=spf1 ip4:173.247.241.189 ip4:192.40.160.0/19 ip4:74.91.80.0/20 include:_spf.google.com include:_spf.sparkpostmail.com include:_spf.smtp.com ~all
  • apple-domain-verification=TTJB42CNZgmrcDfN
  • google-gws-recovery-domain-verification=44630121
  • google-site-verification=PqblfVV4UUtnBWgC4sgGgXWfSTA7makQ8XTRV7O2uNU
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